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A Prony series is similar to a Fourier series but can have fewer terms. It takes the form $sum_{i=1}^{M} A_i e^{sigma _i t} cos left(omega _i t+phi _iright)$ Note...
Asked on 11/15/2021
2 answerI would like to implement the following differential operator in Mathematica, $$prod_{j=1}^n left({mathrm d over mathrm d x}-jright)$$ On a case by case basis, I can just...
Asked on 11/15/2021
3 answerI have a huge Mathematica function (plain text ranging 10-100MB) that I am trying to convert to Fortran for external use. I tried using FortranForm, which does most of the...
Asked on 11/13/2021
0 answerWithout any obvious reason Mathematica started to emit a beep after each evaluation, even when it is error free. Why is that, and how can I turn it off? I...
Asked on 11/11/2021 by Pxx
2 answerIn the NetCDF format, I can define a common dimension with a specified name. Then when I create variables, I can have the dimensions of those variables reference the same...
Asked on 11/11/2021
1 answerWhat is the proposed approach if one wants to simultaneously fit multiple functions to multiple datasets with shared parameters? As an example consider the following case: We have to...
Asked on 11/08/2021
5 answerI have a table of lists, ie. s = { {1, 2, 4}, {7, 11}, {3, 4, 12} }. From this table, I would like to create the table of...
Asked on 11/08/2021
2 answerI have a listo of 1000 numbers ${x_0,x_1,cdots,x_{999}}$, I need to fill a matrix with these numbers. The matrix must have this form: $$left( begin{array}{cccc}x_{9} &x_8 &cdots&...
Asked on 11/05/2021
1 answerI'm expanding the following expression around x=1Series[-((-(16/(x^2 (-2 + x^2))) + 32/(-1 + x^2)^2 - ( 16 x Sqrt[-(-2 + x^2) (-1 + x^2)^2])/(-1 + x^2)^3 + (...
Asked on 11/05/2021
2 answerRecently I am repeating a numerical discrete Fourier transform.Since this problem is related to a real experiment. So the authors use some complex functions to fit the results. Below...
Asked on 10/22/2021
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